Vacuum cleaner



FIG. 1 is a front right perspective view of a vacuum cleaner showing my new design.

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is right side elevational view thereof;

FIG. 7 is a rear elevational view; and,

FIG. 8 is a rear left perspective view thereof. 

The ornamental design for a vacuum cleaner, as shown and described. 